i 
OCCURRENCE OF PRECIOUS STONES IN N.S.W. 249 
Basic rock from Bingara Fe,O, “ aoe 
MnO... “as ... trace 
€a0-...% a oo 208 
MgO... = EE 
K,0 2-5 
Na,O% 
Specific gravity 3:1. 100:0 
T have stated that the garnet itselfis pyrope. A few grains of 
the best coloured stones were picked from a quantity of the washed 
sand. The following is the analysis. An analysis of a South 
African garnet is also given from Dana’s “ System of Mineralogy.” 
Bingara. South Africa. 
SiO, ie sei OwrOr ewe 40°90 
Al,O, ‘si ... 23°68 ye 22°81 
Fe,O, at ae ae 1-48 
FeO... a wT ee ss 13°34 
MnO os wo aa = 38 
CaO... a “a ete “es 4:70 
MgO Ce ee ce eee 
100-44 100-04 
Specific gravity 3-743. 
Mr. G. W. Card has described a garnet-bearing sand from 
Bingara.! This is probably the same garnet. The presence of 
the pyroxene and magnetite strengthens this opinion. But Mr. 
Card describes his specimens as almandine. Tam aware however, 
that garnet is found in several other places around Bingara, but 
T have no personal knowledge of these stones. 
Garnets of good colour, quite fit for gems, are found in the 
auriferous sands of Cuninghame Creek, near Murrumburrah. 
Interesting dyke rocks intersect the granites of this locality. An 
intrusive dyke of leucite basalt was discovered about two miles 
south of Murrumburrah by the writer, and a mile or so further 
csecessansssnaiamiaisiaa 
se Records of the Geological Survey of New South Wales, 1893, Vol. 
I . p- II, 
